What does the graph to the right represent?
a. the 1st law of thermodynamics
b. the 2nd law of thermodynamic
c. thermal equilibrium
d. heat of one object
e. not enough information

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2.

Why does the liquid rise up through the dip tube when the valve is open

Find an expression for the electric field e⃗ at the center of the semicircle. hint: a small piece of arc length δs spans a small angle δθ=δs /r, where r is the radius. express your answer in terms of the variables q, l, unit vectors i^, j^, and appropriate constants.